So a "professor" at some university does "research", and in the course of that research he discovers that 90.2% of Hotfile's traffic is "Clearly copyright infringing" and only 5.3% is "clearly non-infringing."

Now, ignoring the fact that there is absolutely no way to actually be able to make a determination like this, and he is pulling those numbers straight out of the wad of cash the MPAA shoved up his ass, let's ask another question:

When the fuck did it become acceptable in US law for that 5.3% to just be crushed as collateral damage?